A projectile's path is represented by the function h(t) = -4.9t^2 + 25t + 5, where h is its height, in metres, after t seconds. Find the average rate of change of the
projectile's height between 0 s and 2 s.

Tom wants to order tickets online so that he and three of his friends can go to a water park the cost of the tickets is 16.00 per person there is also a 2.50 one-time service fee for ordering tickets online write an expression in term of n that represents the cost for n ordering tickets online

Can anyone explain to me how to do this? anything will .

How many and of which kind of roots does the equation f(x)=x3−x2−x+1